Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1971 84 1:15
1972 0 0:30
1974 569 6:30
1977 146 2:30
1982 377 1:50
1983 1031 13:30
1984 704 12:30
1985 265 20:15
1986 80 2:00
1987 415 3:30
1988 65 3:15
1989 352 9:30
1990 0 0:00
1991 250 4:30
1992 0 3:00
1993 65 6:46
1994 40 1:00
1995 1167 9:45
1996 250 5:15
1997 820 6:15
1998 500 6:30
1999 20 4:15
2000 375 8:45
2001 1491 24:00
2002 142 11:30
2003 59 6:14
2004 2111 52:15
2005 12732 370:45
2006 8746 560:00
2007 1514 568:00
2008 5404 623:30
2009 973 346:10
2010 2500 257:51
2011 5996 379:30
2012 9250 474:30
2013 4681 449:30
2014 8091 366:57
2015 2445 241:57
2016 3378 386:02
2017 3363 309:56
2018 4757 319:16
2019 4933 243:15
2020 4035 304:06
 
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